When screwing in your tips, connectors or stoppers, insert a tightening key into the lifeline hole found on each metal join at the ends of your TWIST & SPIN cables, connectors or stoppers.
Simply use the key as a handle to help you grasp and tighten the screw connection. Use the key EVERY time you attach your tips to a cable.
You will need the key to loosen the connection when removing the tips from the cable. ChiaoGoo tightening keys S/L fit into our Small [S] and large [L] interchangeable cable lifeline holes). US Size 2 - 15